Cisco L3 Switch config example

hostname CORE1
!----SERVICES----!
service password-encryption
service timestamps log datetime msec
no service dhcp
!----USERS, SECURITY`----!
username admin privilege 1 secret admin
enable secret cisco
!----AAA----!
aaa new-model
aaa authentication login default local
!----CONSOLE, VTY---!
line console 0
logging synchronous
exec-timeout 5 0
exit
line vty 0 15
logging synchronous
exec-timeout 0 15
exit
line vty 0 4
transport input ssh
transport output ssh
exit
!----IP, DNS, SSH----!
ip domain-name core1
ip domain name contoso.com
ip ssh version 2
crypto key generate rsa
2048

ip routing
ip route 0.0.0.0 0.0.0.0 10.1.1.2
!----VLAN----!
vlan 10
name Users
exit
vlan 20
name Management
exit
vlan 100
name Native
exit
!----VTP----!
vtp version 2
vtp mode server
vtp domain contoso.com
vtp password P@ssw0rd
!----STP----!
spanning-tree mode rapid-pvst
spanning-tree portfast default
!----INTERFACES----!
interface range fa0/1-2
no spanning-tree portfast
channel-group 1 mode active
channel-protocol lacp
description Po1
exit
interface Po1
no spanning-tree portfast
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan all
switchport trunk native vlan 100
description SW1
exit
interface range fa0/3-4
no spanning-tree portfast
channel-group 2 mode active
channel-protocol lacp
description Po2
exit
interface Po2
no spanning-tree portfast
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan all
switchport trunk native vlan 100
description SW2
exit
interface Gi 0/1
no switchport
ip address 10.1.1.1 255.255.255.252
no shutdown
description R1
exit
!----SVI----!
interface vlan 1
shutdown
exit
interface vlan 10
ip address 172.16.10.1 255.255.255.0
description VLAN 10 Users
no shutdown
exit
interface vlan 20
ip address 172.16.20.1 255.255.255.0
description VLAN 20 Management
no shutdown
exit
interface vlan 100
description VLAN 100 Native
description Native
exit